From: smithm@SPAMBLOCKnetapps.com.au.retro.com   
      
   On Fri, 11 Mar 2005 17:23:58 GMT   
   "John R. Campbell"  wrote:   
      
   > I've commented before that we need a space-borne economy that   
   > 	can help drive the exploitation (if not outright settlement)   
   > 	of NEOs so that there's a sustainable economy and set of   
   > 	populations who are motivated to avoid impacts.   
      
   Quite right.   
      
   But at this very moment there is absolutely nothing that we can do   
   about a known impactor, apart from preparing for the impact. Further   
   down the track the odds should be better.   
      
   It is also worth noting that most impacts will be smaller than the   
   largest natural disasters we deal with from year to year. The biggest   
   threat to duman life may come from Tunguska size objects threatening   
   urban areas. Objects of this size are too small to catalog effectively   
   so dealing with the after effects may be the best course of action for   
   the time being.   
   --   
   Michael Smith   
   Network Applications   
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